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Convert Calorie (cal) to Kilojoule (KJ)

Please provide values below to convert Calorie (cal) to Kilojoule (KJ).
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      Updated on September 1, 2025

      About Calorie (cal) to Kilojoule (KJ) Conversion Calculator

      Written By
      author
      Nadiba Rahman
      Reviewed by
      author
      Mrinmoy Roy
      Share This Post
      You can use our Calorie (cal) to Kilojoule (KJ) conversion calculator as a reliable and efficient tool to simplify energy conversions. It is designed for professionals, students, and anyone who needs a quick and accurate result. Conversion of Calorie (cal) to Kilojoule (KJ) is crucial in Nutrition, Energy related measurements. You can avoid the risk of manual calculation errors and save valuable time using our Calorie (cal) to Kilojoule (KJ) converter.

      Relation Between Calorie (cal) and Kilojoule (KJ)

      Let me explain to you about the relation between Calorie cal and Kilojoule (KJ) first before moving to the conversion process. Because it’s essential to grasp what these units represent.

      What is Calorie (cal)?

      A calorie is the amount of heat energy required to raise the temperature of one gram of pure water by one degree Celsius. Calorie (cal) is a unit of energy measurement which is commonly used in Nutrition, Energy. Calories are commonly used to measure the energy content of food. The term "calorie" is often used interchangeably with "kilocalorie" in the context of food and nutrition..

      What is Kilojoule (KJ)?

      Calorie (cal) is another unit of energy measurement that is used in Physics, Chemistry. A kilojoule is a unit of energy equal to 1000 joules.. Calories are commonly used to measure the energy content of food. The term "calorie" is often used interchangeably with "kilocalorie" in the context of food and nutrition..

      How to Convert Kilojoule (KJ)?

      The conversion between Calorie (cal) and Kilojoule (KJ) follows a simple formula:

      Calorie = Calorie × 0.0041868

      Where, 0.0041868 is the value that allows you to convert between Calorie (cal) and Kilojoule (KJ).

      So,

      1 Kilojoule = 0.0041868 Calorie

      And, 1 Calorie = 1/0.0041868 Kilojoule
      alt

      Examples of Converting Calorie (cal) to Kilojoule (KJ)

      To convert any value from Calorie (cal) to Kilojoule (KJ), simply multiply the amount of Calorie (cal) by the conversion factor:

      1 Kilojoule = 0.0041868 Calorie

      For example, if you want to convert 5 Calorie into Kilojoule and the conversion factor is 0.0041868, then:

      5 Calorie = 5 x 0.0041868 Kilojoule

      Calorie (cal) to Kilojoule (KJ) Conversion Chart

      Here’s a quick reference chart for common conversions between Calorie (cal) and Kilojoule (KJ)
      Calorie (cal)Kilojoule (KJ)
      100 Calorie (cal)0.41868 Kilojoule (KJ)
      200 Calorie (cal)0.83736 Kilojoule (KJ)
      300 Calorie (cal)1.25604 Kilojoule (KJ)
      400 Calorie (cal)1.67472 Kilojoule (KJ)
      500 Calorie (cal)2.0934 Kilojoule (KJ)
      600 Calorie (cal)2.51208 Kilojoule (KJ)
      700 Calorie (cal)2.9307600000000003 Kilojoule (KJ)
      800 Calorie (cal)3.34944 Kilojoule (KJ)
      900 Calorie (cal)3.76812 Kilojoule (KJ)
      1000 Calorie (cal)4.1868 Kilojoule (KJ)
      You can use the above chart for quick and easy reference.

      How 1 Calorie (cal) Converts to Other energy Units

      See the relation between Calorie (cal) and other energy related measurement units:
      1 Calorie(cal)0.003968 British Thermal Unit (BTU)
      1 Calorie(cal)41868000.000000 Erg (erg)
      1 Calorie(cal)26131400000000000000.000000 Electronvolt (ev)
      1 Calorie(cal)0.000000 Exajoule (EJ)
      1 Calorie(cal)3.087000 Foot-pound (ft lbs)
      1 Calorie(cal)0.000000 Gigajoule (GJ)
      1 Calorie(cal)0.000000 Gigawatt-hour (GWh)
      1 Calorie(cal)4.186800 Joule (J)
      1 Calorie(cal)0.001000 Kilocalorie (KCal)
      1 Calorie(cal)0.000004 Megajoule (MJ)
      1 Calorie(cal)0.000000 Megawatt-hour (MWh)
      1 Calorie(cal)0.000004 Natural Gas Low Heating Value (NG LHV)
      1 Calorie(cal)4.186800 Newton-meter (Nm)
      1 Calorie(cal)0.000000 Therms
      1 Calorie(cal)0.001163 Watt-hour (Wh)
      1 Calorie(cal)0.000001 Kilowatt-hour (kwh)
      1 Calorie(cal)4.186800 Watt-second (Ws)

      Features of Our Calorie (cal) to Kilojoule (KJ) Conversion Calculator

      Our Calorie cal to Kilojoule (KJ) converter is more than just a basic converter. Here's what makes it stand out:

      Output Precision Control

      You can control how precise your conversion results are. From settings, you can adjust decimal places from 0 to 12 places.

      Customizable Rounding Options

      You can control the output rounding options based on your necessity. You can turn the rounding mode on or off, and select between Ceiling or Floor rounding to match your needs.

      Multiple Number Formats

      Display your results the way you want:
      1. Standard format (e.g. 12.345245)
      2. Scientific notation (e.g. 1.23452e+1)
      3. Engineering format (e.g. 1.23452 × 10^1)

      Integrated Scientific Calculator

      We know you need to switch between a unit converter and a general calculator back and forth. To minimize your hassle, our Calorie cal to Kilojoule (KJ) converter comes up with an integrated scientific calculator.

      Conversion History Tracking

      You can always review your past energy conversions and go to them whenever you like. It stores your most recent 10 unit conversions.

      Thousand Separators Toggle

      Our Calorie cal to Kilojoule (KJ) converter improves the output readability by toggling the thousand separators “On”. It’s useful when you work with large numbers.

      Conclusion

      Now, you understand how to convert Calorie cal to Kilojoule (KJ) manually. But you can bypass the manual calculation using our energy conversion calculator. This allows you to get faster and accurate results in Kilojoule (KJ), which you can use in Nutrition, Energy related measurements. With the help of our integrated scientific calculator, calculation history tracking, and precision control, our Calorie cal to Kilojoule (KJ) converter is your swiss army knife for daily calculations.
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